Submission #411328

#	Time	Username	Problem	Language	Result	Execution time	Memory
411328		hibye1217	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	67 ms	6176 KiB

molecules

#include "molecules.h"
#include <vector>
#include <algorithm>
#include <iostream>
#define fr first
#define sc second
using ll = long long;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	std::vector<pii> v;
	int n = w.size();
	for (int i = 0; i < n; i++){ v.push_back({ i, w[i] }); }
	sort(v.begin(), v.end(), [](pii a, pii b){
		return a.sc < b.sc;
	});
	ll sum = 0, mn = 1e15;
	for (pll p : v){ sum += p.sc; mn = std::min(mn, p.sc); }
	if (u < mn || sum < l){ return std::vector<int>(); }
	int st = 0, ed = 0; sum = v[0].sc;
	while (1){
		if (l <= sum && sum <= u){
			std::vector<int> res;
			for (int i = st; i <= ed; i++){ res.push_back(v[i].fr); }
			return res;
		}
		if (sum < l){
			if (ed+1 == n){ break; }
			ed += 1;
			sum += v[ed].sc;
		}
		else{
			sum -= v[st].sc;
			st += 1;
		}
	}
	return std::vector<int>();
}

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31